I have just become interested in video making. I have bought myself a Canon 70d, a go pro and a Phantom 4 drone. I have managed to take some footage to edit by using my Mac with Premiere Pro. The problem I have is that I don't seem to get a good quality preview to look at. It is fair quality but not great. This is a problem when trying add effects to make the footage look more classy. I have listed my Mac below. Am I expecting too much out of the old hardware?